View Compilation Error

0_0_38918627_28253.cpp: In function 'void Init()':
0_0_38918627_28253.cpp:40:5: error: 'memset' was not declared in this scope
   40 |     memset(vec1, 0, sizeof(vec1));
      |     ^~~~~~
0_0_38918627_28253.cpp:6:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    5 | #include <vector>
  +++ |+#include <cstring>
    6 | 
0_0_38918627_28253.cpp: In function 'void Solve()':
0_0_38918627_28253.cpp:87:5: error: 'memset' was not declared in this scope
   87 |     memset(tr, 0, sizeof(tr));
      |     ^~~~~~
0_0_38918627_28253.cpp:87:5: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?